Would it be fair to say that each NPA trait increases the fitness of the individual in general of only in the context of an given environment. If we look at environment as just the human context of competing with other humans and with the natural world, can we see any generalizations about the NPA traits? So, could we say that one with N trait has ability to survive, Adding A trait increases the ability to survive, Adding P trait further increases the ability to survive? Could we say all this? Then could we say that adding A- trait increases survival. Then could A= trait further increase survival? So at the end of the day is an NPA= more fit for survival than an N? Or is it all dependent on the particular environmental context?